Home / 278,127.09-383,839.11-157,289.85

Finding the Fourth Proportional to 278,127.09, 383,839.11 and 157,289.85

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Solution

The fourth proportional to 278,127.09, 383,839.11 and 157,289.85 is: 217,073.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,127.09 : 383,839.11 = 157,289.85 : x
  2. Step 2: Convert to fraction form
    278,127.09/383,839.11 = 157,289.85/x
  3. Step 3: Cross multiply
    278,127.09x = 383,839.11 × 157,289.85
  4. Step 4: Simplify right side
    278,127.09x = 60,373,996,036.03
  5. Step 5: Solve for x
    x = 60,373,996,036.03/278,127.09
  6. Step 6: Final answer
    x = 217,073.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.